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Diffstat (limited to 'ast/erfa/aper.c')
| -rw-r--r-- | ast/erfa/aper.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/ast/erfa/aper.c b/ast/erfa/aper.c deleted file mode 100644 index 372c565..0000000 --- a/ast/erfa/aper.c +++ /dev/null @@ -1,162 +0,0 @@ -#include "erfa.h" - -void eraAper(double theta, eraASTROM *astrom) -/* -** - - - - - - - - -** e r a A p e r -** - - - - - - - - -** -** In the star-independent astrometry parameters, update only the -** Earth rotation angle, supplied by the caller explicitly. -** -** Given: -** theta double Earth rotation angle (radians, Note 2) -** astrom eraASTROM* star-independent astrometry parameters: -** pmt double not used -** eb double[3] not used -** eh double[3] not used -** em double not used -** v double[3] not used -** bm1 double not used -** bpn double[3][3] not used -** along double longitude + s' (radians) -** xpl double not used -** ypl double not used -** sphi double not used -** cphi double not used -** diurab double not used -** eral double not used -** refa double not used -** refb double not used -** -** Returned: -** astrom eraASTROM* star-independent astrometry parameters: -** pmt double unchanged -** eb double[3] unchanged -** eh double[3] unchanged -** em double unchanged -** v double[3] unchanged -** bm1 double unchanged -** bpn double[3][3] unchanged -** along double unchanged -** xpl double unchanged -** ypl double unchanged -** sphi double unchanged -** cphi double unchanged -** diurab double unchanged -** eral double "local" Earth rotation angle (radians) -** refa double unchanged -** refb double unchanged -** -** Notes: -** -** 1) This function exists to enable sidereal-tracking applications to -** avoid wasteful recomputation of the bulk of the astrometry -** parameters: only the Earth rotation is updated. -** -** 2) For targets expressed as equinox based positions, such as -** classical geocentric apparent (RA,Dec), the supplied theta can be -** Greenwich apparent sidereal time rather than Earth rotation -** angle. -** -** 3) The function eraAper13 can be used instead of the present -** function, and starts from UT1 rather than ERA itself. -** -** 4) This is one of several functions that inserts into the astrom -** structure star-independent parameters needed for the chain of -** astrometric transformations ICRS <-> GCRS <-> CIRS <-> observed. -** -** The various functions support different classes of observer and -** portions of the transformation chain: -** -** functions observer transformation -** -** eraApcg eraApcg13 geocentric ICRS <-> GCRS -** eraApci eraApci13 terrestrial ICRS <-> CIRS -** eraApco eraApco13 terrestrial ICRS <-> observed -** eraApcs eraApcs13 space ICRS <-> GCRS -** eraAper eraAper13 terrestrial update Earth rotation -** eraApio eraApio13 terrestrial CIRS <-> observed -** -** Those with names ending in "13" use contemporary ERFA models to -** compute the various ephemerides. The others accept ephemerides -** supplied by the caller. -** -** The transformation from ICRS to GCRS covers space motion, -** parallax, light deflection, and aberration. From GCRS to CIRS -** comprises frame bias and precession-nutation. From CIRS to -** observed takes account of Earth rotation, polar motion, diurnal -** aberration and parallax (unless subsumed into the ICRS <-> GCRS -** transformation), and atmospheric refraction. -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** Derived, with permission, from the SOFA library. See notes at end of file. -*/ -{ - astrom->eral = theta + astrom->along; - -/* Finished. */ - -} -/*---------------------------------------------------------------------- -** -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** All rights reserved. -** -** This library is derived, with permission, from the International -** Astronomical Union's "Standards of Fundamental Astronomy" library, -** available from http://www.iausofa.org. -** -** The ERFA version is intended to retain identical functionality to -** the SOFA library, but made distinct through different function and -** file names, as set out in the SOFA license conditions. The SOFA -** original has a role as a reference standard for the IAU and IERS, -** and consequently redistribution is permitted only in its unaltered -** state. The ERFA version is not subject to this restriction and -** therefore can be included in distributions which do not support the -** concept of "read only" software. -** -** Although the intent is to replicate the SOFA API (other than -** replacement of prefix names) and results (with the exception of -** bugs; any that are discovered will be fixed), SOFA is not -** responsible for any errors found in this version of the library. -** -** If you wish to acknowledge the SOFA heritage, please acknowledge -** that you are using a library derived from SOFA, rather than SOFA -** itself. -** -** -** TERMS AND CONDITIONS -** -** Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions -** are met: -** -** 1 Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** -** 2 Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** -** 3 Neither the name of the Standards Of Fundamental Astronomy Board, -** the International Astronomical Union nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS -** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE -** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -** POSSIBILITY OF SUCH DAMAGE. -** -*/ |